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Old 21-09-2024, 07:47 PM
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AstroViking (Steve)
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Join Date: Mar 2022
Location: Melbourne
Posts: 1,243
Hi Lars,

I finally got my hands on the 3D printed adapter.

The good:
- my 90-degree view finder fits the adapter well. Not quite perfectly centred in the adapter, but close enough
- the design is good, and will make looking through the polar scope a LOT easier

The bad:
- Getting it past the focus knob on the Star Adventurer's polar scope is tricky. I had to pry the clamping ring open to get it on, and it is too loose to clamp onto the body of the polar scope. I trimmed about 0.5mm from one end of the clamping ring but that wasn't enough
- the bolt hole is too small for anything I can easily obtain down here. M3 is about the smallest bolt I can find. M2 is a trip to a dedicated bolt store, and even then it's a gamble.

Viking's suggestions:
- to get the adapter to clamp onto the body of the polar scope I had to fit 2 layers of tape, adding about 0.5mm to the radius
- instead of having the bolt running through the clamping ring, how about making the ends of the ring turn out by 90 degrees for about 5-8mm so that a larger bolt can be fitted

Regards,
V.
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Last edited by AstroViking; 21-09-2024 at 08:03 PM. Reason: Add images
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